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Risk-Sharing Externalities

Author

Listed:
  • Luigi Bocola
  • Guido Lorenzoni

Abstract

Financial crises typically occur because firms and financial institutions are highly exposed to aggregate shocks. We propose a theory to explain these exposures. We study a model where entrepreneurs can issue state-contingent claims to consumers. Even though entrepreneurs can use these instruments to hedge negative shocks, they do not necessarily do so because insuring against these shocks is expensive, as consumers are also harmed by them. This effect is self-reinforcing because riskier balance sheets for entrepreneurs imply higher income volatility for the consumers, making insurance more costly in equilibrium. We show that this feedback is quantitatively important and leads to inefficiently high risk exposure for entrepreneurs.

Suggested Citation

  • Luigi Bocola & Guido Lorenzoni, 2023. "Risk-Sharing Externalities," Journal of Political Economy, University of Chicago Press, vol. 131(3), pages 595-632.
    • Handle: RePEc:ucp:jpolec:doi:10.1086/722088
    DOI: 10.1086/722088
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    Cited by:

    1. Adriana Grasso & Juan Passadore & Facundo Piguillem, 2024. "The Macroeconomics of Hedging Income Shares," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 54, October.
    2. Oskolkov, Aleksei & Sorá, Marcos, 2023. "Macroprudential policy for internal financial dollarization," Journal of International Economics, Elsevier, vol. 145(C).
    3. Liu, Siming & Ma, Chang & Shen, Hewei, 2024. "Sudden stop with local currency debt," Journal of International Economics, Elsevier, vol. 148(C).
    4. Drechsel, Thomas & Kim, Seho, 2024. "Macroprudential policy with earnings-based borrowing constraints," Journal of Monetary Economics, Elsevier, vol. 147(C).
    5. Iachan, Felipe S. & Silva, Dejanir & Zi, Chao, 2022. "Under-diversification and idiosyncratic risk externalities," Journal of Financial Economics, Elsevier, vol. 143(3), pages 1227-1250.
    6. Davide Lauria & JiHo Park & Yuan Hu & W. Brent Lindquist & Svetlozar T. Rachev & Frank J. Fabozzi, 2024. "An Empirical Implementation of the Shadow Riskless Rate," Papers 2411.07421, arXiv.org.

    More about this item

    JEL classification:

    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • G01 - Financial Economics - - General - - - Financial Crises
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions

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